Stumpf, R. M.; Boesch, C. (October 2006). "The efficacy of female choice in chimpanzees of the Taï Forest, Côte d'Ivoire". Behavioral Ecology and Sociobiology. 60 (6): 749–765. doi:10.1007/s00265-006-0219-8. S2CID986042.
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van Leeuwen, K. L. (28 October 2013). Bisexual bonding in West African chimpanzees: implications for the evolution of human sociality (Thesis). hdl:1874/285302.
Stumpf, R. M.; Boesch, C. (October 2006). "The efficacy of female choice in chimpanzees of the Taï Forest, Côte d'Ivoire". Behavioral Ecology and Sociobiology. 60 (6): 749–765. doi:10.1007/s00265-006-0219-8. S2CID986042.